Valve-oiling device.



PATENTBD MAY 55,. 1908.

B. AIKMAN. VALVE ILING DEVICE.

APPLICATION FILED 00T.15, 19o.

FFI@ i 'BERT AIKMAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL BRAKEAND ELECTRIC COMPANY, `OF MILWAUKEE, WISCONSIN, A CORPORATION OFWISCONSIN.

VALiv'E-OILING DEVICE To all whom it may concern: l

lBe it known that I, BERT AIKMAN, a citizen ofthev United States,residing atI Chicago, in'the county of Cook and State of Illinois, haveinvented a certain new and useful Irnprovement in Valve-Oiling Devices,of which the following is a full, clear, concise, and exthe valve uponrotation of the valve stern.

In these devices the friction between the slide valve and seat isjconsiderable, as the valve is subjected to compressed air in the valvechamber, and various means for lubricating the valve parts to preventWear resulting from such friction have been proposed but have not beensuccessful for the reason .that in all 'of these, devices the oil isdrawn by the compressed air leaving the valve I chamber.

Although my invention can be applied to valves of differentconstruction, it was designed to be used principally in conjunction withthe engineers lvalve shown and described in the joint co-pendingapplication of Ohls 'nL upon engineers valves for air brake systems,executed fp rl 9, 1907 and filed April 11, 1907, andI shall describeniyinvention in vconnection with such valve in the -acconipan'yingdrawings.

igure 1 isa sectional view of a valve show 4 ing the variogs valveoperative parts and my improved oiling device; Fig. 2is an isolated viewofthevalve arts 'and valve stem taken vfrom the left of l ig. 1, andFig, 3 is a top view of the slide valve..

In this engineers valve, the frame comprisesthe base 1, seat`v 2 andthebonnet suitably secured together in any manner. Extendingffromthevalve seat yat the sides of the, slide surface 4 are the parallel guidewalls 5 and 6 whose upper inner edges may be either straight orvbeveled. The slide valve 7 has the rectangular Aprojection 8Spcification of Letters Patent. appiitaiimfuea october 15, 190e. serialNo. 338,931:

Patented'May 5, 1908.

I whose base 9 engages the slide surface tand whose sides 10 and 11engage the guide walls 5 and 6 respectively. In this extension isJformed the valve pocket 11or y,controlling the connection of valveports with 'each other and with the valve chamber within the bonnet 3 inany well known mannerf Extending upwardly from the slide: valve are theparallel seat projections 12` and 13 and extending from these seatprojections are'the arallel guide walls 14 and 15 respectively,t e seatand guide walls being at right angles to-the guide walls 5. and 6 on thevalve seat. v

Seated on the seat walls 12 and 13 and between theguide walls 14 and 15is a slide block 16 having an opening 17 in which en gages the crank pin'18 -at the end 'of Vthe crank arm or plate 19 whose other endl isattachedto the valve stem 20 extending upwardly through the neck 21V ofthe bonnet and terminating in the polygonal' end adapted for engagementwith a handle whereby the stemniay be turned. Owing to the eccentricposition ofthe pin 18 with respect to the stern 20 the turning 0I the.

stern causes reciprocation of the block 16 .across the valve on theseat-projections 12 `and 13 such-movement also causes a reciprooation of'the valve across the valve seat.

For the application oi my oilin'g device,

the construction of the valve is slightly modified. Vialls 23 connect toether Ithe ends of the seat extensions 12 an 13, 'thereby Aforming awell 24 on to of the valve which may be lledwitlnoil in any manner,preferably through a drilled hole o rpassa eway 25 through the valvestem whose out et may` be hermetically sealed by the screw 26 and gasketv27,. To llead the oil from the well to the bearingsurfaces,sniallapenings or passageways 28 are drilled through the valveat the sides of the valve pocket, as best shown in Fig. 3, and thus, asthe valve the surfaces 4 and the lowersurface of the valve, capillaryattraction causing the oil to also spread overthe sides 10 and 11 andethe guide walls 5 and 6. The oil will also creep from theiwell alongthe side projections 12 and 13 and between the valve block and thesurrounding walls, oil also reaching the bearing surfaces `between thecrank in and block. The oil' being confined in t is horizontal well ontop of the valve cannot'be reciprooates, the oil will be spread betweeni i surfaces. The valve stern can be readily oiled Jrorn a well or leil.passageway 29 drilledthrough the neck of the valve bonnet7 its inletbeing also hermetically sealed by a screw 30 and gasket 31.

I thus provide an oilingdeviee for valves of this kind which insuressufficient lubrication at all tirnes, the compressed air, as berorestated, serving to'assist in lubrication rather than destroy it as inother devices.

y What l claim as new and desire to:A secure byLetters Patent is :7-

1. ln an oiling'dcvice to be associated with an engineers valve, thecoinloinationV `with a valve seat, a valve adapted to slide i thereon,Isaid valve having upwardly eX- tending walls forming a pocket iorreceivingoil, there being ports leading from said.

pocket to the engaging surfaces of the valve and valve seat to introduceoil between said "surfaces, there being an" o ening leading verticallythrough the stem o the valve and adapted to introduce oil into thepocket.

\2. In an engineers valve, the combination with-a slide valve adaptedtoreciprocate over a valve seat within a valve charnber, a slide blockadapted to reciprocate on said valve, an oil well carried by said valve,fthere being passageways for distributing oil from said well to thevvarious bearing surfaces. .ln witnes,s whereof7 l hereunto subscribe mynaine this 9th day of October A. D., 1906.

BERT AIKMAv Witnesses:

CHARLES SCHMIDT, ARTHUR H. BOEM-CHER.

